<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			#c1{
				text-decoration: underline;
			}
			#c2{
				text-decoration: line-through;
			}
			#c3{
				text-transform: capitalize;
			}
			#c4{
				text-transform: uppercase;
			}
			#c5{
				text-transform: lowercase;
			}
		</style>
	</head>
	<body>
		<div id="c1">齐先生AAAaaa</div>
		<div id="c2">齐先生AAAaaa</div>
		<div id="c3">齐先生AAAaaa</div>
		<div id="c4">齐先生AAAaaa</div>
		<div id="c5">齐先生AAAaaa</div>
	</body>
</html>
